The S&P 500 is on track to clock a gain of more than 20%, which would be its best year since 2013.

Top strategists expect the bull market to continue in 2018, albeit a little more muted.

"I think we're absolutely going to expect a more muted return environment," said Kristi Mitchem, CEO of Wells Fargo Asset Management in an interview with TheStreet. "So if we think about 2018 - we're actually projecting returns of about 5-10% depending upon which market that we're looking at."

Whether you're retiring in 2019 or you have another decade to go, when the time arrives, you want to be ready. Just in time for the holidays, TheStreet delivers you the ultimate guide to retiring rich.